
char * str = "Hello world!\n";
void print()
{
   asm("movl $13,%%edx \n\t"
          "movl %0,%%ecx \n\t"
          "movl $0,%%ebx \n\t"
          "movl $4,%%eax \n\t"
          "int $0x80 \n\t"
          ::"r"(str):"edx","ecx","ebx");
}

void exit()
{
   asm("movl $42,%ebx \n\t"
          "movl $1,%eax \n\t"
          "int $0x80 \n\t");
} 
 
void nomain()
{
    print();
    exit();
}

